| THREAD DIRECTION | RIGHT-HAND |
| MATERIAL | IRON ALLOY 660 OVERALL |
| NUT STYLE | INTERNAL OR EXTERNAL WRENCHING HEXAGON |
| LOCKING FEATURE | PREVAILING TORQUE ALL METAL DESIGN |
| BEARING SURFACE TYPE | CHAMFERED |
| THREAD SERIES | UNJF |
| NOMINAL THREAD SIZE | 0.190 INCHES |
| THREAD QUANTITY PER INCH | 32 |
| THREAD CLASS | 3B |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS 5525 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| SURFACE TREATMENT | SILVER OVERALL |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | AMS 2411 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| HARDNESS RATING | 38.0 ROCKWELL C MINIMUM AND |
| 48.0 ROCKWELL C MAXIMUM |
| NUT HEIGHT | 0.188 INCHES MAXIMUM |
| WIDTH ACROSS FLATS | 0.365 INCHES MINIMUM AND |
| 0.377 INCHES MAXIMUM |
| PRECIOUS MATERIAL AND LOCATION | EXTERNAL SURFACES SILVER |
| SPEC/STD CONTROLLING DATA | |
| MANUFACTURERS CODE | 77445 |
| MFR SOURCE CONTROLLING REFERENCE | 661640 |